1.1 Before the Dollar: A World of Competing Currencies
For most of recorded history, no single currency dominated global trade. Ancient commerce relied on barter and commodity money — gold, silver, grain, and cloth. The Roman denarius held sway across the Mediterranean for centuries, but it collapsed with the empire that issued it. Medieval Venice, the Dutch Republic, and later Great Britain each enjoyed periods of financial preeminence tied to their dominance in trade and naval power.
Britain’s pound sterling served as the de facto global reserve currency throughout the 19th century and into the early 20th. The gold standard — under which each currency was convertible into a fixed quantity of gold — provided the discipline that prevented governments from printing money recklessly. London’s financial markets were the deepest in the world. British merchant banks financed railways in Argentina, cotton plantations in Egypt, and rubber estates in Malaya. The pound was the language in which the British Empire wrote its economic will upon the world.
Two World Wars destroyed that order. Britain emerged from the Second World War exhausted, indebted, and shorn of the imperial trade networks that had sustained sterling’s dominance. Into that vacuum stepped the United States — the only major industrial power whose homeland had not been bombed, whose factories were humming at peak capacity, and whose gold vaults were full.
1.2 The Bretton Woods Conference and the Dollar Standard
In July 1944, with the war still raging in the Pacific, delegates from 44 Allied nations convened at the Mount Washington Hotel in Bretton Woods, New Hampshire, to design the post-war international monetary system. The gathering was shaped by two towering intellects with competing visions: John Maynard Keynes, representing Britain, and Harry Dexter White, representing the United States.
Keynes proposed an international clearing union — a genuinely supranational monetary institution that would issue a new reserve currency he called the “bancor,” and which would impose symmetric obligations on both surplus and deficit countries to adjust their balances. It was an elegant system designed to prevent the kind of deflationary pressure that had turned the 1929 crash into the Great Depression.
White’s plan was blunter and more advantageous to American interests. The dollar, backed by American gold, would be the anchor of the new system. Other currencies would be pegged to the dollar at fixed rates. The dollar alone would be convertible into gold at $35 per ounce. The United States, holding roughly 70% of the world’s monetary gold at the time, had the leverage to impose its vision, and it did.
The resulting system created two new institutions — the International Monetary Fund and the World Bank — and established a framework of fixed exchange rates centred on the dollar. For the next quarter century, this system provided the stability that underpinned the post-war economic boom in Europe, Japan, and North America.
1.3 The Nixon Shock and the End of Gold Convertibility
By the late 1960s, cracks were appearing in the Bretton Woods architecture. The United States was running persistent balance-of-payments deficits, funding the Vietnam War and President Johnson’s Great Society programmes by printing dollars that flowed abroad. Foreign central banks, particularly France under President de Gaulle, began converting their dollar holdings into gold, draining American reserves.
On August 15, 1971, President Richard Nixon appeared on national television and announced that the United States would immediately suspend the convertibility of dollars into gold. The Bretton Woods system effectively ended overnight. Nixon framed the move as a defence against “international money speculators” — but its real cause was that the United States could no longer honour the gold commitment it had made at Bretton Woods.
The immediate aftermath was chaotic. Currencies floated. Gold prices soared. Inflation rose globally. Many predicted the dollar would lose its reserve currency status. Instead, it adapted — and in adapting, it became more dominant, not less.
1.4 The Petrodollar Arrangement
The decisive move that secured the dollar’s post-gold dominance was the petrodollar agreement. In 1973–1974, following the OPEC oil embargo and quadrupling of oil prices, the Nixon administration negotiated a series of agreements with Saudi Arabia and other Gulf states. In exchange for American security guarantees, arms sales, and political support, these nations agreed to price their oil exports exclusively in US dollars and to recycle their oil revenues — “petrodollars” — into US Treasury bonds and American financial markets.
The implications were profound. Oil is not merely a commodity — it is the lifeblood of industrial civilisation. Every country that needs oil needs dollars. Every country needs oil. Thus every country on earth was effectively required to maintain a supply of US dollars, ensuring perpetual global demand for the currency. The dollar had found its new anchor not in gold, but in the world’s most strategic energy resource.
This arrangement has held, with modifications, for five decades. It is the structural foundation of dollar hegemony in the contemporary world.
